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Blame project/pyexts.c

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/*******************************************************************/
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/*  sbpython3: external configurable build project for Python-3.x. */
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/*  Copyright (C) 2018  Z. Gilboa                                  */
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/*  Released under the Standard MIT License; see COPYING.SBPYTHON3.*/
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/*******************************************************************/
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/*******************************************************************/
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/* pyexts.c: a simple development-time utility for generating      */
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/* make rules for python's extension modules. The utility is       */
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/* included with the sbpython3 project for reference only.         */
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/*                                                                 */
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/* cc -std=c99 -D_XOPEN_SOURCE=700 pyexts.c                        */
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/*******************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include "pyexts.h"
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static void pyext_uppercase(char * buf, const char * name)
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{
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	const char *	src;
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	char *		dst;
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	src = name;
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	dst = buf;
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	for (; *src; )
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		*dst++ = ((*src >= 'a') && (*src <= 'z'))
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			? 'A' - 'a' + *src++ : *src++;
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	*dst = 0;
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}
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int main(int argc, char ** argv)
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{
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	const struct pyext_meta *	p;
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	size_t				nlen;
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	const char **			parg;
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	const char *			dtab;
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	const char *			otab;
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	const char *			htab;
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	const char *			stab;
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	const char *			ltab;
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	const char *			rtab;
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	const char *			vtab;
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	const char *			name;
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	char				fmt[64];
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	char				uname[64];
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	if ((argc == 2) && !strcmp(argv[1],"--py-init-func")) {
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		for (p=pyexts; p->name; p++)
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			printf("PY_INIT_FUNC(%s);\n",p->name);
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		return 0;
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	}
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	if ((argc == 2) && !strcmp(argv[1],"--init-func-ptr")) {
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		for (p=pyexts; p->name; p++) {
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			nlen = strlen(p->name);
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			sprintf(fmt,"\t{\"%%s\",%%-%zusPyInit_%%s},%%-%zus\\\n",
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				20-nlen,23-nlen);
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			printf(fmt,p->name," ",p->name," ");
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		}
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		return 0;
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	}
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	for (p=pyexts; p->name; p++) {
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		/* init */
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		name = (p->name[0] == '_') ? &p->name[1] : p->name;
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		nlen = strlen(name);
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		pyext_uppercase(uname,name);
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		/* pretty */
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		dtab = (nlen <= 4)
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			? "\t\t\t"
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			: (nlen <= 12)
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				? "\t\t" : "\t";
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		otab = (nlen <= 3)
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			? "\t\t\t"
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			: (nlen <= 11)
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				? "\t\t" : "\t";
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		ltab = (nlen <= 2)
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			? "\t\t\t"
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			: (nlen <= 10)
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				? "\t\t" : "\t";
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		rtab = (nlen <= 1)
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			? "\t\t\t"
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			: (nlen <= 9)
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				? "\t\t" : "\t";
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		vtab = (nlen <= 6)
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			? "\t\t"
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			: (nlen <= 14)
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				? "\t" : "";
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		htab = (nlen <= 8)
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			? "\t\t" : "\t";
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		stab = (nlen <= 9)
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			? "\t\t" : "\t";
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		/* output */
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		printf("# %s\n",p->name);
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		for (parg=p->srcs; *parg; parg++)
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			printf("PYEXT_%s_SRCS%s+= "
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				"pyext/obj/%s.c\n",
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				uname,dtab,*parg);
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		printf("\n");
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		printf("PYEXT_%s_LOBJS%s= $(PYEXT_%s_SRCS:.c=.lo)\n",uname,otab,uname);
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		printf("PYEXT_%s_OBJS%s= $(PYEXT_%s_SRCS:.c=.o)\n",uname,dtab,uname);
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		printf("\n");
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		for (parg=p->hdrs; parg && *parg; parg++)
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			printf("$(PYEXT_%s_LOBJS):%s"
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				"CFLAGS_CONFIG += %s\n",
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				uname,htab,*parg);
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		for (parg=p->hdrs; parg && *parg; parg++)
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			printf("$(PYEXT_%s_OBJS):%s"
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				"CFLAGS_CONFIG += %s\n",
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				uname,stab,*parg);
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		for (parg=p->cstd; parg && *parg; parg++)
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				printf("$(PYEXT_%s_LOBJS):%s"
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					"CFLAGS_LAST += %s\n",
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					uname,otab,*parg);
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		for (parg=p->cstd; parg && *parg; parg++)
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			printf("$(PYEXT_%s_OBJS):%s"
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				"CFLAGS_LAST += %s\n",
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				uname,dtab,*parg);
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		if (p->hdrs || p->cstd)
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			printf("\n");
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		printf("PYEXT_%s_SHARED%s= pyext/%s$(PYTHON_SOEXT)\n",uname,ltab,p->name);
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		printf("PYEXT_%s_STATIC%s= pyext/%s$(OS_ARCHIVE_EXT)\n",uname,ltab,p->name);
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		printf("\n");
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		for (parg=p->vars; parg && *parg; parg++)
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			printf("$(PYEXT_%s_SHARED):%s"
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				"LDFLAGS_DYNEXT += %s\n",
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				uname,vtab,*parg);
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		for (parg=p->deps; parg && *parg; parg++)
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			printf("$(PYEXT_%s_SHARED):%s%s\n",uname,vtab,*parg);
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		printf("$(PYEXT_%s_SHARED):%s$(PYEXT_%s_LOBJS)\n",uname,vtab,uname);
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		printf("$(PYEXT_%s_STATIC):%s$(PYEXT_%s_OBJS)\n",uname,vtab,uname);
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		printf("\n");
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		printf("pyext-%s-shared:%s$(PYEXT_%s_SHARED)\n",name,rtab,uname);
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		printf("pyext-%s-static:%s$(PYEXT_%s_STATIC)\n",name,rtab,uname);
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		printf("\n");
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		printf("pyext-%s-clean:\n",name);
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		printf("\trm -f $(PYEXT_%s_LOBJS)\n",uname);
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		printf("\trm -f $(PYEXT_%s_OBJS)\n",uname);
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		printf("\trm -f $(PYEXT_%s_SHARED)\n",uname);
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		printf("\trm -f $(PYEXT_%s_STATIC)\n",uname);
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		printf("\n");
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		printf("clean:\tpyext-%s-clean\n",name);
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		printf("\n");
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		printf(".PHONY:\tpyext-%s-shared\n",name);
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		printf(".PHONY:\tpyext-%s-static\n",name);
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		printf(".PHONY:\tpyext-%s-clean\n",name);
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		printf("\n\n");
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	}
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	return 0;
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}